An external resistance coupled device

Abstract

This utility model relates to the field of couplers with external resistors, and discloses a coupler with an external resistor, including a coupler body and a resistor body. The resistor body is placed on the surface of the coupler body, and the surface of the coupler body is provided with a mounting structure. The mounting structure includes two brackets, both of which are fixedly connected to the surface of the coupler body. A pin is slidably inserted into the surface of the bracket. This external resistor coupler, by setting the mounting structure, achieves good contact between the electrode plate and the resistor body by using a pressure plate to push the electrode plate against the pin surface of the resistor body. The other end of the transmission line electrically connected to the surface of the electrode plate is electrically connected to the coupler body, thereby ensuring the connection between the resistor body and the coupler body. The connection is made by pressing, which facilitates the replacement of the resistor body and avoids damage to the coupler body when disassembling the resistor body.

Description

Technical Field

[0001] This utility model relates to the field of couplers with external resistors, specifically to a coupler with an external resistor. Background Technology

[0002] An external resistor coupler is a device used in electronic circuits. It mainly consists of a coupling section and an external resistor. The function of the coupler is to connect and transmit signals from different parts of the circuit, ensuring that signals can be effectively transmitted from one circuit link to another. It also isolates DC components and prevents mutual interference between circuits. The external resistor is a resistive element that is separate from the basic structure of the coupler and connected independently in the circuit. It can change the operating characteristics of the coupler by adjusting its resistance value according to the specific circuit design requirements. For example, it can adjust the signal transmission strength, control the gain or attenuation of the circuit, so that the entire circuit can operate more stably and accurately to meet different signal processing requirements.

[0003] When mounting resistors externally to a coupler, soldering is often used. Soldering can achieve a good electrical connection between the resistor and the coupler circuit, reduce contact resistance, and improve the stability and accuracy of signal transmission. However, if a problem occurs with the soldered resistor, it is troublesome to remove and replace it, requiring the use of professional tools for desoldering. Improper operation may also damage the circuit board. Therefore, we propose a coupler with an external resistor. Utility Model Content

[0004] The purpose of this invention is to provide a coupler with an external resistor to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a coupler with an external resistor, comprising a coupler body and a resistor body, wherein the resistor body is placed on the surface of the coupler body, and the surface of the coupler body is provided with a mounting structure, the mounting structure comprising two brackets, both of which are fixedly connected to the surface of the coupler body, a pin being slidably inserted into the surface of the bracket, a limit arm being rotatably connected to the inner wall of the bracket, two circular holes being formed on the surface of the limit arm, the size of the pin being adapted to the size of the circular holes, a pressure plate being fixedly connected to one end of the limit arm, an electrode plate being fixedly connected to the side of the pressure plate near the coupler body, a transmission line being electrically connected to the surface of the electrode plate, and the other end of the transmission line being electrically connected to the coupler body.

[0006] The effect achieved by the above components is as follows: by setting the installation structure, the pressure plate is used to push the electrode plate against the pin surface of the resistor body, ensuring good contact between the electrode plate and the resistor body. The other end of the transmission line electrically connected to the surface of the electrode plate is electrically connected to the coupler body, thereby ensuring the connection between the resistor body and the coupler body. The connection is made by pressing, which facilitates the replacement of the resistor body and avoids damage to the coupler body when disassembling the resistor body.

[0007] Preferably, a spring A is fitted onto the arc surface of the pin, and the two ends of the spring A are fixedly connected to the pin and the bracket, respectively.

[0008] The effect achieved by the above components is that the pin is inserted into the round hole by the force of the spring A's contraction. The spring provides stability for the pin inside the round hole, thereby preventing the pin from coming out of the round hole due to shaking.

[0009] Preferably, a guide rod is fixedly connected to one side of the limiting arm, and a limiting frame is fixedly connected to the surface of the bracket, with the guide rod sliding against the inner wall of the limiting frame.

[0010] The effect achieved by the above components is that when the limiting arm rotates, it will drive the guide rod to slide within the limiting frame. The limiting frame restricts the movement path of the guide rod, thereby restricting the movement path of the pressure plate and thus positioning the rotation angle of the pressure plate.

[0011] Preferably, two insulating pads, which are made of rubber, are bonded to the surface of the coupler body.

[0012] The effect achieved by the above components is that the pins on both sides of the coupler body will adhere to the surface of the insulating pad. The two rubber insulating pads glued to the surface of the coupler body can prevent electrical faults such as short circuits between the resistor body and the coupler body, thereby improving the safety and stability of equipment operation.

[0013] Preferably, a connecting rod is fixedly connected to the surfaces of the two pressure plates, and the vertical cross-section of the connecting rod is U-shaped.

[0014] The effect achieved by the above components is that the connecting rod will drive the pressure plate to move, and the connecting rod can facilitate the simultaneous pulling of the connecting pressure plate.

[0015] Preferably, the transmission line is a threaded type and has elasticity.

[0016] The effect achieved by the above components is that the pressure plate will stretch the transmission line when it rotates. The transmission line is threaded and elastic, which not only ensures a good electrical connection, but also prevents the transmission line from being pulled and broken when the pressure plate rotates.

[0017] Preferably, a round rod is fixedly connected to the surface of each of the two pressure plates, a drive arm is sleeved on the surface of the round rod, a spring B is sleeved on the arc surface of the round rod, the two ends of the spring B are fixedly connected to the drive arm and the round rod respectively, and a heat sink is fixedly connected to the side of the two drive arms that are close to each other, and the heat sink is attached to the surface of the resistor body.

[0018] The above components achieve the following effects: the heat sink dissipates heat to the surrounding environment through its large surface area, and the elastic force provided by spring B ensures that the heat sink is always in close contact with the resistor body, thus guaranteeing the heat dissipation effect.

[0019] Compared with the prior art, the beneficial effects of this utility model are:

[0020] This utility model, through the setting of an installation structure, achieves the effect of using a pressure plate to drive the electrode sheet to press against the pin surface of the resistor body, ensuring good contact between the electrode sheet and the resistor body. The other end of the transmission line electrically connected to the surface of the electrode sheet is electrically connected to the coupler body, thereby ensuring the connection between the resistor body and the coupler body. The connection is made by pressing, which facilitates the replacement of the resistor body and avoids damage to the coupler body when disassembling the resistor body. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0022] Figure 2 This is a structural schematic diagram of the present invention from another angle;

[0023] Figure 3 This is a schematic diagram of the resistor body and mounting structure of this utility model;

[0024] Figure 4 This is a schematic diagram of the structure of the pressure plate of this utility model;

[0025] Figure 5 This utility model Figure 3 Enlarged view of point A in the image.

[0026] In the diagram: 1. Coupler body; 2. Resistor body; 3. Mounting structure; 301. Bracket; 302. Pin; 303. Limiting arm; 304. Circular hole; 305. Pressure plate; 306. Electrode plate; 307. Transmission line; 308. Spring A; 309. Guide rod; 310. Limiting frame; 311. Insulating pad; 312. Connecting rod; 313. Round rod; 314. Drive arm; 315. Spring B; 316. Heat sink. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] Please see Figure 1-2 This utility model provides a technical solution: a coupler with an external resistor, including a coupler body 1 and a resistor body 2. The resistor body 2 is placed on the surface of the coupler body 1. The surface of the coupler body 1 is provided with a mounting structure 3, which includes two brackets 301. Both brackets 301 are fixedly connected to the surface of the coupler body 1. A pin 302 is slidably inserted into the surface of the bracket 301. A limiting arm 303 is rotatably connected to the inner wall of the bracket 301. Two circular holes 304 are opened on the surface of the limiting arm 303. The size of the pin 302 is adapted to the size of the circular holes 304. A pressure plate 305 is fixedly connected to one end of the limiting arm 303, and the pressure plate 305 is close to the coupler body 1. An electrode plate 306 is fixedly connected to one side of the resistor body 2. A transmission line 307 is electrically connected to the surface of the electrode plate 306. The other end of the transmission line 307 is electrically connected to the coupler body 1. By setting the mounting structure 3, the electrode plate 306 is pressed against the pin surface of the resistor body 2 by the pressure plate 305. The electrode plate 306 and the resistor body 2 are in good contact. The other end of the transmission line 307 electrically connected to the surface of the electrode plate 306 is electrically connected to the coupler body 1, thereby ensuring the connection between the resistor body 2 and the coupler body 1. The connection is made by pressing, which facilitates the replacement of the resistor body 2 and avoids damage to the coupler body 1 when disassembling the resistor body 2.

[0029] Reference Figure 3 and Figure 4 and Figure 5As shown in this embodiment: a spring A308 is fitted onto the arc surface of the pin 302. Both ends of the spring A308 are fixedly connected to the pin 302 and the bracket 301, respectively. The pin 302 is inserted into the circular hole 304 by the force of the spring A308's contraction. The spring provides stability for the pin 302 within the circular hole 304, thus preventing the pin 302 from dislodging from the hole due to shaking. A guide rod 309 is fixedly connected to one side of the limiting arm 303, and a limiting frame 310 is fixedly connected to the surface of the bracket 301. The guide rod 309 slides against the inner wall of the limiting frame 310. When the limiting arm 303 rotates, it causes the guide rod 309 to slide within the limiting frame 310. The limiting frame 310 restricts the movement path of the guide rod 309, thereby restricting the movement path of the pressure plate 305 and positioning the rotation angle of the pressure plate 305. Two insulating pads 311, made of rubber, are bonded to the surface of the coupler body 1. The pins on both sides of the coupler body 1 adhere to the surface of the insulating pads 311. The two rubber insulating pads 311 bonded to the surface of the coupler body 1 prevent electrical faults such as short circuits between the resistor body 2 and the coupler body 1, improving the safety and stability of equipment operation. Connecting rods 312 are fixedly connected to the surfaces of the two pressure plates 305. The vertical cross-section of the connecting rods 312 is U-shaped. The connecting rods 312 drive the pressure plates 305 to move, facilitating the simultaneous pulling of the connecting pressure plates 305. The transmission line 307 is threaded and elastic. When the pressure plates 305 rotate, the transmission line 307 is stretched. The threaded and elastic nature of the transmission line 307 not only ensures a good electrical connection but also prevents the transmission line 307 from breaking due to being pulled by the pressure plates 305 during rotation. Both pressure plates 305 are fixedly connected to round rods 313. A drive arm 314 is fitted onto the surface of the round rod 313. A spring B315 is fitted onto the arc surface of the round rod 313. The two ends of the spring B315 are fixedly connected to the drive arm 314 and the round rod 313, respectively. A heat sink 316 is fixedly connected to the side of the two drive arms 314 that is close to each other. The heat sink 316 is attached to the surface of the resistor body 2. The heat sink 316 dissipates heat to the surrounding environment through its large surface area. The elastic force provided by the spring B315 can keep the heat sink 316 in close contact with the resistor body 2, ensuring the heat dissipation effect.

[0030] Working principle: When installing resistor body 2, first pull the two pins 302. The pins 302 move and slide within the bracket 301, gradually disengaging from the round hole 304. As the pins 302 move, spring A308 is stretched. After the pins 302 disengage from the round hole 304, pull the connecting rod 312. The connecting rod 312 moves the pressure plate 305. The movement of the pressure plate 305 causes the limiting arm 303 to rotate within the bracket 301. The rotation of the limiting arm 303 causes the guide rod 309 to slide within the limiting frame 310. The limiting frame 310 restricts the movement path of the guide rod 309, thereby limiting the pressure plate 301. The movement path of 5 is used to position the rotation angle of the pressure plate 305. When the pressure plate 305 rotates, it stretches the transmission line 307. The transmission line 307 is threaded and elastic, which not only ensures a good electrical connection, but also prevents the transmission line 307 from being pulled and broken when the pressure plate 305 rotates. After the pressure plate 305 rotates to the appropriate angle, the pin 302 is released. The pin 302 will be inserted into the round hole 304 by the force of the spring A308. The pin 302 achieves the function of limiting the limit arm 303, thereby limiting the function of the pressure plate 305. Then the resistor body 2 is placed on the coupling. The coupler body 1 is positioned at a preset location on its surface. At this time, the pins on both sides of the coupler body 1 will adhere to the surface of the insulating pads 311. The two rubber insulating pads 311 bonded to the surface of the coupler body 1 can prevent electrical faults such as short circuits between the resistor body 2 and the coupler body 1, improving the safety and stability of the equipment operation. At this time, the pressure plate 305 is reversed. The pressure plate 305 will drive the limit arm 303 to rotate within the bracket 301. The rotation of the pressure plate 305 will drive the electrode plate 306 to move closer to the pins of the resistor body 2, until the pressure plate 305 drives the electrode plate 306 to adhere tightly to the pin surface of the resistor body 2. 2. During operation, heat is generated. A drive arm 314 is sleeved on a round rod 313 fixedly connected to the surface of the two pressure plates 305. A spring B315 is sleeved on the arc surface of the round rod 313. The two ends of the spring B315 are fixedly connected to the drive arm 314 and the round rod 313 respectively. A heat sink 316 fixedly connected to one side of the two drive arms 314 is attached to the surface of the resistor body 2. The heat generated by the resistor body 2 is transferred to the heat sink 316. The heat sink 316 dissipates the heat to the surrounding environment through its large surface area. The elastic force provided by the spring B315 can keep the heat sink 316 in close contact with the resistor body 2, ensuring the heat dissipation effect.

[0031] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0032] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A coupler with an external resistor, comprising a coupler body (1) and a resistor body (2), wherein the resistor body (2) is placed on the surface of the coupler body (1), and the surface of the coupler body (1) is provided with a mounting structure (3), characterized in that: The mounting structure (3) includes two brackets (301), both of which are fixedly connected to the surface of the coupler body (1). A pin (302) is slidably inserted into the surface of the bracket (301). A limiting arm (303) is rotatably connected to the inner wall of the bracket (301). Two round holes (304) are opened on the surface of the limiting arm (303). The size of the pin (302) is adapted to the size of the round hole (304). A pressure plate (305) is fixedly connected to one end of the limiting arm (303). An electrode plate (306) is fixedly connected to the side of the pressure plate (305) near the coupler body (1). A transmission line (307) is electrically connected to the surface of the electrode plate (306). The other end of the transmission line (307) is electrically connected to the coupler body (1).

2. The coupler with an external resistor according to claim 1, characterized in that: The arc surface of the pin (302) is fitted with a spring A (308), and the two ends of the spring A (308) are fixedly connected to the pin (302) and the bracket (301) respectively.

3. The coupler with an external resistor according to claim 1, characterized in that: A guide rod (309) is fixedly connected to one side of the limiting arm (303), and a limiting frame (310) is fixedly connected to the surface of the bracket (301). The guide rod (309) slides against the inner wall of the limiting frame (310).

4. The coupler with an external resistor according to claim 1, characterized in that: The surface of the coupler body (1) is bonded with two insulating pads (311), which are made of rubber.

5. A coupler with an external resistor according to claim 1, characterized in that: A connecting rod (312) is fixedly connected to the surfaces of the two pressure plates (305), and the vertical cross section of the connecting rod (312) is U-shaped.

6. A coupler with an external resistor according to claim 1, characterized in that: The transmission line (307) is a threaded type and is elastic.

7. A coupler with an external resistor according to claim 1, characterized in that: Both pressure plates (305) are fixedly connected to a round rod (313). A drive arm (314) is sleeved on the surface of the round rod (313). A spring B (315) is sleeved on the arc surface of the round rod (313). The two ends of the spring B (315) are fixedly connected to the drive arm (314) and the round rod (313) respectively. A heat sink (316) is fixedly connected to the side of the two drive arms (314) that is close to each other. The heat sink (316) is attached to the surface of the resistor body (2).

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